Rotary engine-valve



M.. M. AND C. W. JACKMAN. ROTARY ENGINE VALVE.

APPLlcATloN man nc.2a, |916.

Peeeneed Feb. 2.4.1920.

2 SHEETS-SHEET l.

alitozm 1Q M. M. AND C. W'. JACKMAN.

ROTARY ENGINE VALVE.

APPLICATION FILED Dmzs, 191s.

,33 1,7.1 1 Patented Feb. 24, 1920.

2 SHEETS-SHEET 2.

menton! UNITED sTATEs PATENT oEEioE.

MILES M. JAGKMAN AVND W. JAGKMAN, QF WATERLOO, INDIANA.

ROTARY ENGINE-VALVE.

To-allwhom t may, concern.'

Beit known that we, MILES M. JACK- MAN and CHARLES WV. JAGKMAN, citizensy of the United States, and residents of Vaterloo, in the county of Dekalb and Stateof Indiana, have invented certain new and useful Improvements in Rotary Engine- Valves, of which the followingis a specification.

The present invention relates to valves and hasv more Vespecial reference to rotary valves for internal combustion engines.

The invention hasfor its principal object to provide a rotary valve for multiple cyl.

inder engines having arplurality of ports I formed therein in a manner such as will permit the same to successively register with lthe cylinder ports, whereby, the same may intake and exhaust at the proper intervals.

Itis amorespecicobject of our invention to provide a rotary valvefin which the intake and exhaust ports are provided with separate entrances or manifolds in order that fresh and spent gases may be properly conducted to and from the engine cylinders.

' Among other aims and objects of the invention may be recited, theprovision of a valve of the.y character mentioned with a view to compactness, and-in which the number of parts are few, the construction simple, the cost of production small, and 'eiiiciency and operation high.

Other improvements and noveldetails in the .construction and arrangement of the various-parts of the valvev will beV brought out more in detail in the description to lfollow, which, for a clear understanding of the invention, should be considered'in connection with the accompanying drawings, form. ing a part hereof and wherein is disclosed for the purpose of illustration',` convenient and satisfactory embodiments of theinven-`r tion.

In the drawings:

Figure l is a vertical longitudinal section through a multiple cylinder internal combustion engine, my improvedvvalve being applied thereto;

Fig. 2 is a transverse section in detail of the valve chamber showing the arrangement of the rotary valve therein;

Fig. 3 is a fragmental end vview of the valve casing with the manifold removed;

Fig. 4 is a longitudinal sectional view through the valve.

Referrmg now more particularly to the drawings, wherein like reference characters j Speietionf Letters Patent Patented Feb. 24,1920. Application inea December 23, 1916. f serial No. 138,559.

designate corresponding parts throughout the several views, it may be here noted, that our improved valve is particularly adapted fory use upon multiple cylinder internal combustion engines. Therefore, to Vfully illustrate the present improvements, we have shown in the accompanying drawings, a fragment of a multiple cylinder engine indi cated in its entirety by the numeral l, the

upper portion of which is rovided with aV lated through the chamber to maintain the cylinders and the valve; receiving chamber 2 at the desiredy temperature. An annularv chamber 5 is` formed in the upper portion of one extremity of the chamber 2 and is so formed as to permit the securing of the in vtake manifold thereto, which manifold is indicated by the numerall 6, by means of set screws? or the like. Obviously, by posi-v.

tioning the intake manifold 6 adjacent the annular chamben, theA same. will be in direct communication with `the cylindrical valve chamber y2, and consequently,` permits the passageof iuid from the same thereinto, whereat, it will be properly passed into the various cylinders of the engine by the: improved valve means, which willi be subsequently described. The opposite end of the valvey chamber 2 is preferably in horizontaly alinement with the intake manifold 6, and has extending from a suitable open-ingk an 'exhaust manifold 8, thereby, permitting the spent gases as conveyed from 'the various cylindersof the engine. to` be exhausted into the atmosphere.`

With a View toward providing means for controlling the passage of freshand spent gases to and from the c linders of the en'- gine, we varrange within the cylindrical valve receiving chamber 2, a cylindrical valve 9, journaling the ends thereof within Y the outermost walls of the opposite engine cylinders.. yA plurality of circumferentially alined pairs of ports are arranged within the cylindrical valve 9 at points therealong in proximity of the engine cylinders, said p'airs of ports being arranged-in relatively Vstaggered relation, whereby, the same will be successively engaged or registered with tlhe single ports of the engine cylinders in proper sequence. pairs of circumferentially alined portsY as arranged within the cylindrical valve Y9 serve as intake ports `and are designated by the numeral 10, while others serve as exhaust ports and are in turn designated by the numeral 11. Thus, it will be understood, that upon rotation of the cylindrical valve 9, the said circumferentially alined ports will serve as means for introducingA fresh charges of gas. to the engine cylinders and for conveying or exhausting spent gas therefrom. A partition element '12 isv arranged withinthe cylindrical valve 9 and extends throughout the lengthV thereof to provide separate and n -distinct manifolds for the intakeV and exhaust ports 10 and 11. In order that the several manifolds will properly communicate with the intake portion 10 and the exhaust portion 11, the said partition is alternately twisted in opposite directions as in-V dicated at 13, thus, providing a substantial spiral like course. By so forming the partition 12, it will be appreciated that two separate ways are arranged within the cylindrical valve9, which, by reason of their tortuous passage communicate with the intake ports 10 and the-exhaust ports 11 respectively. To insure the passage of the fresh and spent gases into and from the engine cylinders in the proper direction, the opposite ends of the partition wall are bent downwardly as indicated by the numeral 14,

into engagement with the adjacent portions of the cylindricalvalve 9, consequently, offering efficient closure means.

A sprocket wheel 15 is arranged upon oneV end of the cylindrical valve 9 and is adaptedV to be rotatably received within the annular chamber 5, whereupon, the sprocket chain 16, which is driven from the crank shaft of the engine at approximately one-half theV speed of the latter is passed upwardly andl vover the various teeth thereof, thus. causing the valve to be rotated at a similar speed. Y

`To. insure uid tight connection between the cylindrical valve. 9 and the side wall of the valve receiving chamber 2, there is arranged upon the said valve at points .adjacent the outer portion thereof, packing 17 and` 18, the latter being received within Certain of the several.

' portions.'

From the'foregoing, it will be appreciated by workers in the yart, that with our improved valve all .intricate arrangements of cut off means hitherto prevalent in the art, such. as' puppet .valves and the like will be eliminated, further, complex valve Y operating mechanism for actuating the said cut olf meansV at predetermined intervals in order that the same will properly perform their functions is eliminated. It will also be understood, that by previding rotatable cut olf 'means, the disagreeable vvibration andrnoise commonly experienced in cut off means such as `heretofore referred to is overcome.

As many changes could be madeV in the above construction and many apparently Widely different embodiments of this invention could be made without departing from vthe scope thereof, it is lintended that `all matter contained in theabove' description.

or shown in the accompanyingdrawings shall be interpreted vas illustrative and not in a limiting sense. Itis alsof to be. understood th at the language used in t'he following claim is intended to covery all ofthe generic `and speci-fic features of the invention herein'described and all statements of the scope of the invention, which, asa matter of language, mig-ht be said to fall there-.

said chamber including a cylindrical shelll having a pair of `closely arranged ,spaced ports adapted to successively register with the cylinder port, an internal partition inv the valve separating the ports therein, the portion of the shell located between; and bordering `upon the intake and exhaust ports being depressed to-provide aseat, and packing arranged in the depressed portion of` the valve preventing leakage from one port' to the otlier'between the ber wall.V Y

In testimony whereof, we aflix our signa.-

tures; hereto. Y y

MiLizs M. JACKMAN. oi-iannns W. JAoKMaN.

valve and the cham- 

